I spent a day in Cieszyn, Poland once. We parked our rental car in Český Těšín and walked across to Poland. I brought home a computer book (O'Reilly's _SSH_) written in Polish as a souvenir.

As a side note, while in Třinec, Czech Republic, I decided I would like to bring home a bicycle jersey. I went into a local bicycle shop and looked around. The proprietors and I were unable to come up with a common language, but they were quite pleasant. Unfortunately, all their jerseys sported English markings. Alas.

Thanks, guys. I definitely want to be in Warsaw for the Mass, although as I recall Krakow's broke 1,000 for the first time a few months before Chicago's did (I think you could call Krakow our "sister CM" in that regard.) Other stops include the city my grandmother is from (Semiaticz) for maybe two days.

One flight option has an overnight layover in DC and then the better part of a day in Copenhagen, which I've only driven through on my way to Sweden. Of course, based on past history, I'll probably be looking at this a year from now with the same questions...

I was in both Krakow and Warsaw visiting family this last summer but didn't get to ride in either city's mass. Warsaw is more modern that Krakow and seems to have more variety in its bike community. I saw a trendy looking fixie shop by the University in Warsaw but barely saw anyone riding a fixed gear in Krakow. Warsaw also just installed bike share stations everywhere this year and I saw lots of people riding those bikes around.